I'd say stone tools. Stone can be chiseled or left alone and be used as a weapon to defend one's self, or as a way of getting food.
Well it's thought that the oxygenation of the atmosphere contributed to the evolution
Answer:
A rainy season or A)
Explanation:
Grass is a no as the answer that is because if there was a great decrease in grass, then the rabbit population would slowly and slowly disperse.
C) and D) if there was so many hawks that they hunted so many rabbits that they were extinct that would be like B)
I have NO Idea what the other guy was thinking.
But I am always happy to help!!!!
<h2>Issues with animal research in bred</h2>
Explanation:
- Since all animals are reared and brought up in a similar domain, they may contrast from animals reproduced in an alternate settlement Animal activist may think that its unscrupulous to utilize animals in look into Working with animals requires IRB conventions that protect the prosperity of the animals, making it difficult to play out certain examinations on them.
- Scientific researchers keep up that despite the fact that animal research, (as some other models in vitro or on the other hand human), doesn't generally convey ideal outcomes for human pertinence, it's still – in blend with important non-creature techniques - the essential method to do research to comprehend living systems and to give the most ideal affirmation of the impacts of new medicines preceding the primary clinical preliminaries in people.
- Clinical preliminaries are not ready to give results with 100% precision because of the huge inconstancy of the human population. The medicines improvement process including in silico, in vitro, pre-clinical (animals) and clinical (human) stages diminish the hazard for the Human population as a whole.
